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United States Patent | 5,336,570 |
Dodge, Jr. | August 9, 1994 |
Disclosed is a hydrogen fuel cell which resists swelling of a proton-exchange membrane electrolyte by clamping the membrane between two catalytic electrodes in a tubular or frusto-conical configuration. Improved breathability and hydrogen sealing are obtained. The electrodes can be bonded to the solid electrolyte by employing an electrolytic proton-transporting polymer in the liquid-phase. Including finely divided platinum in the liquid phase provides an advantageous means of incorporating catalyst in the cell. Also disclosed is a blind tube porous carbon electrode assembly which can be manufactured by a method including coating a self-supporting electrode with a liquid-phase polymeric electrolyte material, for example, perfuorosulfonic acid, and curing it.
Inventors: | Dodge, Jr.; Cleveland E. (P.O. Box 178, Hoosick Falls, NY 12090) |
Appl. No.: | 015411 |
Filed: | February 9, 1993 |
Current U.S. Class: | 429/31; 429/33; 429/35 |
Intern'l Class: | H01M 008/10 |
Field of Search: | 429/32,30,33,31,34,35,94,39 |
4175165 | Nov., 1979 | Adlhart. | |
4824742 | Apr., 1989 | Parry | 429/30. |
5094928 | Mar., 1992 | Dyer. | |
5171646 | Dec., 1992 | Rohr | 429/32. |